docs: def get_pos_hint(poshints, sizehintx, sizehinty):
      """Return a tuple of ``(pos_hint_x, pos_hint_y)`` even if neither of
      those keys are present in the provided ``poshints`` -- they can be
      computed using the available keys together with ``size_hint_x``
      and ``size_hint_y``.
  
      """
      return (
          get_pos_hint_x(poshints, sizehintx),
          get_pos_hint_y(poshints, sizehinty)
      )